Cable telegraphic system.



PATENTED MAY 26, 19689 I. KITSEE.

CABLE TELE naw/0 UNIT erm ne CABLE TELE GRAPHIC SYSTEM.

Specificationof Iietters Patent.

Patented May 26, 1908.

Application filed December 17, 1806. Serial No. 3%,363.

To all whom it may concern:

'Be it known that 1, lemon Kirsna, a citizen of the United States,residing inthe city and county of Philadelphia, State of Pennsylvania,have inventeda new and useful Im- 'provement in Cable TelegraphicSystems, of which the following is a specification.

My invention relates to telegraphy and more especially to'submarine orsubterra nean telegraphy, known as cable telegraphy.

It is the object of my invention to employ in a cable system anextremely sensitive relay which shall control a cicuit or circuitsassociated with or including a second relay of esssensitiveness, thesecond relay serving to produce or record messages at its station asreceived by the extremely sensitive relay, and to repeat such messagesreceived by the extremely sensitive relay into another line or cable. I

It is a further object of my'invention that the circuit or circuitscontrolled by the ex tremely 'sensitive relay shall be prevented fromproducing any sparking or arcing with conseqluent welding efiects at thecontacts of the 're ay and that such circuit or circuits shall, withrelatively slight energy, be enabl'ed to sufiiciently and positivelyactuate at a relayor a terminal station.

the less sensitive relay.

For an illustration of one form my invention may take reference is to behad to the accompanying drawing, which illustrates diagrammatically thetelegraphic apparatus The main line or cable 1 has impressed upon it ata distant station successive electrical impulses alternating in polarityas described in prior patents granted to me, and. the transmitting"apparatus at such station. may, if desired, take" the form illustratedin Letters Patent No. 831,355 granted mconSeptember 18, 1906.

An extremely sensitive polarized relay 2 has its magnet windingsconnected in series with the cable 1. The relay tongue 3 en gagesalternately the contact 4 and the stop 5 as the ,signal impulses 'passover the cable 1; The relay tongue 3 andcontact 4 are included in acircuit comprisingthe conductor 6, a source of energy 7, as a battery,the very great non-inductive resistance 10 and the conductor 11. Thebattery 7 and resistance 10 are also in a circuit including in serieswith them the conductors 12 and 13, battery 8, condenser 9, and thewindings of the polarized relay 14 here shown, by way of example,

of the same type as the relay 2. The relay i l is of less scnsitivenessthan the relay 2, which has, for example, a resistance of ap roXimatclyfive thousand ohms, while the re 14 has a resistance, for example, ofone thousand ohms. The battery 7 is shown opposed to the batteryS and tobe of twice the power or voltage. The tongue 15 of the relay 14 engageseither of the contacts '16, or 17 ac cording to the direction of'currentthrough the relay. The contact 16 is connected by conductor 18 with aterminal of the second cable or line 26, there being connected in series between such cable 26 and the earth 25 thebattery 19, the inductiveresistance 20, shunted by a condenser 26, the condenser 22, and thebattery 21. A conductor 123 communicates from a point between inductance ZOand condenser 22 with the tongue 15 of the relay. I

The relay contact 17 communicatesthrough conductors 27 and. 30 with thewinding 33 of an ordinary non-polarized telegraph relay in whose circuitis included the battery 32 and the conductor 31, the lattercommunicating by conductor 28 with the relay tongue 29 is a resistancebridged across the con ductors 30 and 31. I

34 the armature of the relay and is normallyretracted by spring .85, butwhen attracted leaves dontact 3'7 and engages the stop 36. Included 'inthe circuit controlled by armature 34 and the contact 37 are seriallyconnected the conductor 38, battery 39, sounder or Morse recorder magnet40 and conductor e1. v

42 represents the normally retracted armature of the sounder orrecorder.

The operation of the apparatus is as follows: The operator at a distant.station sends over the cable 1 successive impulses of practically equalduration but of opposite polaritics. A positive i'npulse coming over thecable, we will assume, will cause the tongue 3 to make engagement withthe contact l, thus closing the circuit through the cjonductors 6 i and,11 which then short circuits ithe battery 7 and resistance 10, which maybe, for example, of seventy iive thousand to one hundred thousand ohms.The condenser 9 then becomes. charged by the battery 8 permitting animpulse,v say a positive one, to pass through the, relay tongue 3,contact 4, conductor 6' through conductor 12 and the winding of the lesssensitive relay 14 which will cause the tongue 15 to leave contact l?and to'engage-the contact 16, thus closing the circuit, through theconductor 18and thus permitting the battery 21 tov send'fa'singleimpulse to the second line or cable 26through .tongue 15 and contact lfi'of'the relay 14 the condenser'22. Now suppose a ne'gative impulse.comesover the main cable' 1, .the'

tongue 3 will bemoved, against the 'sto 5 in the relay 2 and in breakingcircuit wit the contact 4 there will'be no sticking or Welding becausethe.;volt'age of the battery .7- acting through the'high resistance 10cannot pro-. duce enough-current'gfor such detrimen al eflrect in asensitive relay. Furthermore, t e

battery 7 then seems toaidor causeithe in stant and better dischargeofcondenser-9, so that the tongue '15 of the polarized relay 14 will becarried back against contact 17 andxbreaks contact With 16. In breakingcontact with 16 an impulse of opposite polarity is sent .over the cableor line 26 due to the kick or impulse'producedby battery 19 andinductance .20. The result is that. the eX- tremely sensitive relay 2responds to the very weak positive and negative impulses received fromthe cable 1 and thereby controls the circuit of-a second-relay to sendover the second cable 26 corresponding impulses both as to operate ineffect like the key 7, 8, shown in' the drawing in my prior patent No.-831,355,. And by the-use of the battery-7 and '8, condenser 9, and highresistance 10, the 'extremely sensitive relay 2 is required to han-'efficiently control the, less sensitive relay 14 whichcontrolsgreateramounts of electrical energy in its several cdntrolled'circuits. Considering how the production oftelegraphic messages at suchrelay station, with the relay tongue 15 engaging contact 17 theresistance 29 is short circuited and the relay magnet 33 fully energizedto, break the cir--- cuit between its armature 34 and the contact 37.Such rupture of circuit allows the armature 42 of the sounder orrecorder to be pulled upwardly by spring against its back stop. When therelay tongue 15 moves over to contact 16., it breaks circuit withcontact 17 thus throwing into' circuit with the relay 33 the resistance29 which sufficiently weakens the current through the relay 33- to'cause. the spring 35 to bring the armature 34' against contact 37, thusclosing the circuit of the sounder or recorder 40' and causingtheattraction of the armature 42. This motion of cuit said resistance..dlevery slight amounts of electrical energy and is nevertheless able topositively and the armature 42 between its two stops enablesthe readingof a message by sound or the record of a message on a tapein a wellknown manner.

What I claimis: 1. In a telegraph system, the combination with a cable,of a relay, a second relay con-' trolled thereby and included in circuitwith a condenser and a battery, and a shunt across thebreak of saidfirst-relay including a high resistance and a battery.

" 2. In a telegraph system, the combination with a cable, of asensitiye'relay, a relay of less sensitiveness controlled thereby andincluded in a circuit including a battery, a condenser, a highresistance, and a second battery of greater power than and connected inopposition to said first mentioned battery,

.said second battery and high resistance being connected across thebreak. of said sensitive relay.

, 3. In a telegraph system, the'co'mbination with a cable, ofase'nsitive relay, a rela of less sensitiveness controlled thereby ancincluded in a circuit comprising abatt'eryfa condenser, a highresistance, and a battery 1 of greater power than and connected inopposition to said first mentioned battery, a

second line or cable including in its circuit a battery, a condenser, aninductive device,

and a second battery ofgreater ower than and connected in opposition tosa1d first battery, said indu tive device and second batterybeingconnected across the break of said less sensitive relay. v

4. In a telegraph system, the combination with a'- cable, of a'relay,- asecond relay controlled thereb ,the winding of said second relay includein a circuit with a source of energ a condenser and a resistance, said'main e or cable relayadapted to short on- 5. Ina'telegraph system, thecombination witha cable, of arelay, a second relay having its-windingincluded in a circuit withop- 6. In a telegraph system, the combinationwith a cable, ofa relay, a second relay hav-v mg 1ts winding included ina circuit with oppositely disposed sources of energy and a condenser,and a circuit including one of said sources of energy and contacts ofthe main relay.

7.- In a telegraph system, the combination.

with a cable, of a relay, a second relay hav mg its winding included ina circuit with a source of energy a condenser and a resist-' "ance, saidmain relay adapted to short circuit said resistance, means controlled bysaid second relay for retransmitting the message received by said mainrelay, and means controlled by said second relay. for translating themessage received by said main relay;

8. In a telegraph system, the combination with a cable, of a relay, asecond relay heying its winding included in a circuit with a source ofenergy econdenser and e resistance, said main relay adapted to shortcircuit said resistance, and means controlled by said second relay forretrensmitting the mes sage received by said main relay.

9. In s telegraph system, the combination With a cable, of e relay, aseccndreley hav ing its winding included in e circuit with e condenserand e resistance, ecircuit includling seid resistance and the contactsoft-he.

tion with a cable, of e sensitive polarized-re 5 for translating themessage ergy a condenser and a high resistance, said high resistanceincluded in a circuit controlled by the contacts of said main relay, andmeans controlled bys id second relay sensitive relay. 7

n Witness whereof I hereunto efhx my signetnre in the presence of thetwo subscribing Witnesses.

ISIDOR KITSEE.

YVi't'nesses ALVAH RITTENHOUSE, ANNA E. STEINBOOK.

received on said

